As early as grade school, children are taught a "unit" on ancient Egypt. It is an interesting and colorful period of history, so it is easy to see why so many "educators" include it in their curriculum. The tragedy is that they do not depict these people in their full glory, opting instead to "teach" a lifeless, colorless, materialistic version of their history.
There are many aspects of Egyptian history that are overlooked. The life of Moses, for example, is generally completely excluded, as is the fact that Egyptian magicians could really do magic (turning sticks to snakes, for example, as is well documented in historical texts).
But the largest omission, at least in terms of size, relates to Egypt's famed pyramids.
Schools teach that the pyramids were built by enormous swarms of Egyptians over great swaths of time. Perhaps. But the theory has so many holes in it that no reputable climatoligist has ever had a peer-reviewed paper published on the subject!
Consider the following:
From these questions, parsimony dictates that we look to a simpler explanation for how the pyramids were built. It must have been a great intelligence, capable of traveling the world and communicating with diverse species. It must have been a personal intelligence, because it created these structures for the benefit of a people and not for some random or unknowable reason. And it must have been quite powerful, considering how quickly the pyramids had to be built and the great strength necessary to lift such massive stones.
One theory that has been put forth involves visitors from another world. Scientists admit that there may be life on other planets -- they even look for it on Mars -- but do they let teachers help their students to explore the possibility that humanity has received assistance from alien species in the past? They do not! And why? For no good reason other than that the existence of a higher scientific power would threaten the authority of the cult of science!